| Acronym | Definition |
|---|
| TTS | Text To Speech |
| TTS | The Transplantation Society (Canada) |
| TTS | Temporary Threshold Shift (hearing) |
| TTS | True to Size (merchandise fitting) |
| TTS | Transdermal Therapeutic System |
| TTS | Telegraphic Transfer Selling (currency rate) |
| TTS | Twin Transfusion Syndrome (medical) |
| TTS | Transaction Tracking System |
| TTS | Time to Sleep |
| TTS | Trouble Ticketing System |
| TTS | Total Training Solutions |
| TTS | Transmission Test Set |
| TTS | Teletypesetter |
| TTS | The Transit System (Texas) |
| TTS | Through-The-Scope (esophageal balloon dilator) |
| TTS | Time to Service |
| TTS | Task Tracking System |
| TTS | Technology Transfer Society |
| TTS | Tracked Transit System |
| TTS | Through-the-Sensor |
| TTS | Timed Transition System |
| TTS | Test Technology Symposium |
| TTS | Tank Thermal Sights |
| TTS | Trouble Tracking System (Hekimian) |
| TTS | Technical Training Squadron (USAF) |
| TTS | True Total Sulfur |
| TTS | Thermo Time Switch |
| TTS | Technical Training Specialist |
| TTS | Tactical Training Strategy |
| TTS | Time-Temperature-Sensitization |
| TTS | Tilt Tray Sorter (baggage handling systems) |
| TTS | Transition to Support |
| TTS | Temporary Technical Services, Inc. |
| TTS | Training the Street, Inc (New York, NY financial instruction) |
| TTS | Time Temperature Superpositioning |
| TTS | Transistor-Transistor Logic, Schottky Barrier |
| TTS | Tactical Training Simulator (US DoD) |
| TTS | Temperature Test Set |
| TTS | Transparent Touch Screen |
| TTS | Transition to Supervision |
| TTS | Target Tug Squadron |
| TTS | Technical Test Specification |
| TTS | Task Transfer Sheet |
| TTS | TIRKS Table System (Alcatel) |
| TTS | Torrance Transit System (California) |
| TTS | Telemetry Test Simulator |
| TTS | Triple Transient Suppression |
| TTS | Tertiary Trauma Survey (medical examination) |
| TTS | Total Travel Service, Inc. |
| TTS | Tape Tracking System |
| TTS | Trunk Traffic Simulator |
| TTS | Toeristiek Travel Search (tourism; Netherlands and Belgium) |
| TTS | Travel to Scanplane (MRI scans) |
| TTS | Time to Stabilization |
| TTS | Taipei Trade Shows (Taiwan) |
| TTS | Through the Stargate (gaming) |